So I am looking to buy a new fishfinder for one of my boats. I had originally decided to try the Humminbird Helix 7 chirp Di, but I recently saw where Cabelas had a Garmin 7" chirp with Di and mapping on sale that caught my eye. I currently have a Lowrance elite 7 on my smaller boat and am happy with it with the exception of the slow GPS. Any recommendations would be appreciated. Thanks